Evolutionary and developmental origins of the vertebrate dentition
According to the classical theory, teeth derive from odontodes that invaded the oral cavity in conjunction with the origin of jaws (the 'outside in' theory). A recent alternative hypothesis suggests that teeth evolved prior to the origin of jaws as endodermal derivatives (the 'inside...
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ftunivgent:oai:archive.ugent.be:684242 2023-06-11T04:10:21+02:00 Evolutionary and developmental origins of the vertebrate dentition Huysseune, Ann Sire, Jean-Yves Witten, Paul Eckhard 2009 application/pdf https://biblio.ugent.be/publication/684242 http://hdl.handle.net/1854/LU-684242 https://doi.org/10.1111/j.1469-7580.2009.01053.x https://biblio.ugent.be/publication/684242/file/684254 eng eng https://biblio.ugent.be/publication/684242 http://hdl.handle.net/1854/LU-684242 http://dx.doi.org/10.1111/j.1469-7580.2009.01053.x https://biblio.ugent.be/publication/684242/file/684254 No license (in copyright) info:eu-repo/semantics/restrictedAccess JOURNAL OF ANATOMY ISSN: 0021-8782 Biology and Life Sciences dentition development evolution odontodes teeth vertebrates ZEBRAFISH DANIO-RERIO TOOTH DEVELOPMENT NEURAL CREST EXPRESSION PATTERNS CONODONT ELEMENTS ATLANTIC SALMON HOMEOTIC TRANSFORMATION PHARYNGEAL DENTICLES CORYDORAS AENEUS ARMORED CATFISH journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2009 ftunivgent https://doi.org/10.1111/j.1469-7580.2009.01053.x 2023-05-10T22:31:59Z According to the classical theory, teeth derive from odontodes that invaded the oral cavity in conjunction with the origin of jaws (the 'outside in' theory). A recent alternative hypothesis suggests that teeth evolved prior to the origin of jaws as endodermal derivatives (the 'inside out' hypothesis). We compare the two theories in the light of current data and propose a third scenario, a revised 'outside in' hypothesis. We suggest that teeth may have arisen before the origin of jaws, as a result of competent, odontode-forming ectoderm invading the oropharyngeal cavity through the mouth as well as through the gill slits, interacting with neural crest-derived mesenchyme. This hypothesis revives the homology between skin denticles (odontodes) and teeth. Our hypothesis is based on (1) the assumption that endoderm alone, together with neural crest, cannot form teeth; (2) the observation that pharyngeal teeth are present only in species known to possess gill slits, and disappear from the pharyngeal region in early tetrapods concomitant with the closure of gill slits, and (3) the observation that the dental lamina (sensu Reif, 1982) is not a prerequisite for teeth to form. We next discuss the progress that has been made to understand the spatially restricted loss of teeth from certain arches, and the many questions that remain regarding the ontogenetic loss of teeth in specific taxa. The recent advances that have been made in our knowledge on the molecular control of tooth formation in non-mammalians (mostly in some teleost model species) will undoubtedly contribute to answering these questions in the coming years. Article in Journal/Newspaper Atlantic salmon Ghent University Academic Bibliography Journal of Anatomy 214 4 465 476 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences dentition development evolution odontodes teeth vertebrates ZEBRAFISH DANIO-RERIO TOOTH DEVELOPMENT NEURAL CREST EXPRESSION PATTERNS CONODONT ELEMENTS ATLANTIC SALMON HOMEOTIC TRANSFORMATION PHARYNGEAL DENTICLES CORYDORAS AENEUS ARMORED CATFISH |
spellingShingle |
Biology and Life Sciences dentition development evolution odontodes teeth vertebrates ZEBRAFISH DANIO-RERIO TOOTH DEVELOPMENT NEURAL CREST EXPRESSION PATTERNS CONODONT ELEMENTS ATLANTIC SALMON HOMEOTIC TRANSFORMATION PHARYNGEAL DENTICLES CORYDORAS AENEUS ARMORED CATFISH Huysseune, Ann Sire, Jean-Yves Witten, Paul Eckhard Evolutionary and developmental origins of the vertebrate dentition |
topic_facet |
Biology and Life Sciences dentition development evolution odontodes teeth vertebrates ZEBRAFISH DANIO-RERIO TOOTH DEVELOPMENT NEURAL CREST EXPRESSION PATTERNS CONODONT ELEMENTS ATLANTIC SALMON HOMEOTIC TRANSFORMATION PHARYNGEAL DENTICLES CORYDORAS AENEUS ARMORED CATFISH |
description |
According to the classical theory, teeth derive from odontodes that invaded the oral cavity in conjunction with the origin of jaws (the 'outside in' theory). A recent alternative hypothesis suggests that teeth evolved prior to the origin of jaws as endodermal derivatives (the 'inside out' hypothesis). We compare the two theories in the light of current data and propose a third scenario, a revised 'outside in' hypothesis. We suggest that teeth may have arisen before the origin of jaws, as a result of competent, odontode-forming ectoderm invading the oropharyngeal cavity through the mouth as well as through the gill slits, interacting with neural crest-derived mesenchyme. This hypothesis revives the homology between skin denticles (odontodes) and teeth. Our hypothesis is based on (1) the assumption that endoderm alone, together with neural crest, cannot form teeth; (2) the observation that pharyngeal teeth are present only in species known to possess gill slits, and disappear from the pharyngeal region in early tetrapods concomitant with the closure of gill slits, and (3) the observation that the dental lamina (sensu Reif, 1982) is not a prerequisite for teeth to form. We next discuss the progress that has been made to understand the spatially restricted loss of teeth from certain arches, and the many questions that remain regarding the ontogenetic loss of teeth in specific taxa. The recent advances that have been made in our knowledge on the molecular control of tooth formation in non-mammalians (mostly in some teleost model species) will undoubtedly contribute to answering these questions in the coming years. |
format |
Article in Journal/Newspaper |
author |
Huysseune, Ann Sire, Jean-Yves Witten, Paul Eckhard |
author_facet |
Huysseune, Ann Sire, Jean-Yves Witten, Paul Eckhard |
author_sort |
Huysseune, Ann |
title |
Evolutionary and developmental origins of the vertebrate dentition |
title_short |
Evolutionary and developmental origins of the vertebrate dentition |
title_full |
Evolutionary and developmental origins of the vertebrate dentition |
title_fullStr |
Evolutionary and developmental origins of the vertebrate dentition |
title_full_unstemmed |
Evolutionary and developmental origins of the vertebrate dentition |
title_sort |
evolutionary and developmental origins of the vertebrate dentition |
publishDate |
2009 |
url |
https://biblio.ugent.be/publication/684242 http://hdl.handle.net/1854/LU-684242 https://doi.org/10.1111/j.1469-7580.2009.01053.x https://biblio.ugent.be/publication/684242/file/684254 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
JOURNAL OF ANATOMY ISSN: 0021-8782 |
op_relation |
https://biblio.ugent.be/publication/684242 http://hdl.handle.net/1854/LU-684242 http://dx.doi.org/10.1111/j.1469-7580.2009.01053.x https://biblio.ugent.be/publication/684242/file/684254 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1469-7580.2009.01053.x |
container_title |
Journal of Anatomy |
container_volume |
214 |
container_issue |
4 |
container_start_page |
465 |
op_container_end_page |
476 |
_version_ |
1768384699826176000 |